Machine shop operations and setups pdf
Chapter 2: Lathe Machine – Manufacturing ProcessesTurning is a form of machining, a material removal process, which is used to create rotational parts by cutting away unwanted material. The turning process requires a turning machine or lathe, workpiece , fixture , and cutting tool. The workpiece is a piece of pre-shaped material that is secured to the fixture, which itself is attached to the turning machine, and allowed to rotate at high speeds. The cutter is typically a single-point cutting tool that is also secured in the machine, although some operations make use of multi-point tools. The cutting tool feeds into the rotating workpiece and cuts away material in the form of small chips to create the desired shape. Turning is used to produce rotational, typically axi-symmetric, parts that have many features, such as holes, grooves, threads, tapers, various diameter steps, and even contoured surfaces. Parts that are fabricated completely through turning often include components that are used in limited quantities, perhaps for prototypes, such as custom designed shafts and fasteners.
Machining technology: machine tools and operations
Form milling operation 8. A standard shaper is usually capable of holding and machining a cube of the same dimensions as the length of stroke. According to general design, the distinctive types of milling machines are: 1. The cutter teeth cover only a portion of the tool, while the remaining length is sop smooth surface.Knee Operaations knee is a rigid grey iron casting which slides up and down on the vertical ways of the column face. Tool Post size, etc. This increases the life of the tip and thus its economical cutting life. The tool mounted on the compound rest is attached to a circular base, graduated in degree!
A single point cutting tool such as lathe, an index head, hack s. Various milling machine operations Following different operations can be performed on a milling machine: 1. It is a circular disc bored out and threaded to fit to the nose of the lathe spindle. Operatiohs work to be machined is held i.
What tools are those. Length and width of table top 7. Floor space required These are used to produce flat surfaces parallel to axis of rotation.
Taper turning attachment method 5. Capabilities 2. The lead screw is made with square, or buttress type threads. Carriers are of two types and they are: Straight tail carrier and Bent tail carrier.
The lathe is a very versatile and important machine to know how to operate. This machine rotates a cylindrical object against a tool that the individual controls. The lathe is the forerunner of all machine tools. The work is held and rotated on its axis while the cutting tool is advanced along the line of a desired cut. The lathe is one of the most versatile machine tools used in industry. With suitable attachments, the lather may be used for turning, tapering, form turning, screw cutting, facing, dulling, boring, spinning, grinding, polishing operation.
Cross-slide It can be moved parallel to the face of the column. Figure shows the adjustment required for the stroke length calculation. Metal spinning lathe 2. No notes for slide.
Whitworth mechanism Hydraulic shapers are high power machines and are used for heavy duty work. The cutter used for this operation is cylindrical type or end mill type. Tool angles -Tool angles have great importance.